JPH0423210Y2 - - Google Patents
Info
- Publication number
- JPH0423210Y2 JPH0423210Y2 JP1986120268U JP12026886U JPH0423210Y2 JP H0423210 Y2 JPH0423210 Y2 JP H0423210Y2 JP 1986120268 U JP1986120268 U JP 1986120268U JP 12026886 U JP12026886 U JP 12026886U JP H0423210 Y2 JPH0423210 Y2 JP H0423210Y2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- reinforcing member
- adhesive
- adhesive layer
- hot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000013307 optical fiber Substances 0.000 claims description 46
- 230000003014 reinforcing effect Effects 0.000 claims description 32
- 239000012790 adhesive layer Substances 0.000 claims description 16
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 8
- 239000004831 Hot glue Substances 0.000 claims description 5
- 239000010410 layer Substances 0.000 claims description 5
- 238000007500 overflow downdraw method Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910018068 Li 2 O Inorganic materials 0.000 description 1
- 239000006121 base glass Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910000174 eucryptite Inorganic materials 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は光フアイバを融着法により接続する場
合に接続部分を補強するために用いられる光フア
イバ接続用補強部材の改良に関するものである。[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to an improvement of an optical fiber connection reinforcing member used for reinforcing the connection portion when optical fibers are connected by a fusion method.
（従来の技術）
光フアイバの融着接続部の信頼性を高めるため
には、融着された素線部を被覆部とともに補強部
材に固定する方法が有効であり、このための補強
部材として実開昭58−105505号に示されるように
低熱膨脹の透明結晶化ガラスを用いることが提案
されている。そしてこのような補強部材はその片
側の表面にホツトメルト型の接着剤層が予め形成
されており、融着された光フアイバの接続部を一
対の補強部材の接着剤層の間に挟んでホツトプレ
スすることにより接着剤層をホツトメルトさせて
光フアイバを補強部材に固定するものである。と
ころがこのような従来の補強部材を用いて固定を
行う方法によれば、光フアイバの被覆部の厚さと
むき出しにされた素線部の厚さとが大幅に異なる
ために素線部では上下の補強部材間に空洞部が生
じ、この空洞部を埋めるために接着剤の厚みを大
きくし、かつ大きい圧力を加えなければならな
い。このため、固定を行う際に、光フアイバの両
端を左右に引張ることにより光フアイバの素線が
クロスしたり偏つたりしないようにしながら接着
剤をホツトメルトさせても、加圧時の偏荷重によ
り溶融した接着剤層の内部で光フアイバの移動が
生じ易く、光フアイバの中心部分に正しく位置さ
せたままで補強部材本体に固定することは容易で
はなかつた。また加圧力を小さくすると気泡が入
り易く、いずれにしても補強条件が非常にコント
ロールしにくかつた。(Prior art) In order to improve the reliability of optical fiber fusion splices, it is effective to fix the fused strands together with the sheathing to a reinforcing member. As shown in 1983-105505, it has been proposed to use transparent crystallized glass with low thermal expansion. Such a reinforcing member has a hot-melt adhesive layer pre-formed on one surface thereof, and the fused optical fiber connection portion is sandwiched between the adhesive layers of a pair of reinforcing members and hot-pressed. In this way, the adhesive layer is hot-melted to fix the optical fiber to the reinforcing member. However, according to this conventional method of fixing using reinforcing members, the thickness of the coated part of the optical fiber and the thickness of the exposed strand are significantly different, so upper and lower reinforcement is required for the strand. Cavities are created between the parts, and in order to fill the cavities, the thickness of the adhesive must be increased and a large amount of pressure must be applied. For this reason, when fixing, even if you hot-melt the adhesive while pulling both ends of the optical fiber from side to side to prevent the optical fiber strands from crossing or becoming lopsided, the uneven load during pressurization will cause The optical fiber tends to move inside the molten adhesive layer, and it is not easy to fix the optical fiber to the reinforcing member body while keeping it correctly positioned at the center of the optical fiber. Furthermore, when the applied pressure is reduced, bubbles tend to enter, and in any case, reinforcing conditions are extremely difficult to control.
（考案が解決しようとする問題点）
本考案は上記のような従来の問題点を解決し
て、ホツトプレスを行う際に光フアイバが正しい
位置から偏つたりねじれたりすることがなく、ま
た気泡の混入のおそれもない光フアイバ接続用補
強部材を目的として完成されたものである。(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems, and prevents the optical fiber from being deviated or twisted from its correct position during hot pressing, and eliminates air bubbles. It was completed for the purpose of a reinforcing member for connecting optical fibers with no fear of contamination.
（問題点を解決するための手段）
本考案は、融着法により接続された光フアイバ
の素線部を被覆部とともに接着剤を介して固定す
るための補強部材であつて、低膨脹の結晶化ガラ
スからなる補強部材本体の光フアイバとの接合面
を平坦面とし、その平坦面上にホツトメルト型の
接着剤層を形成し、少なくとも一方の接着剤層に
光フアイバの被覆部を嵌入させるための凹部を凹
設したことを特徴とするものである。(Means for Solving the Problems) The present invention is a reinforcing member for fixing the strands of optical fibers connected by a fusion method together with the covering part through an adhesive. The joining surface of the reinforcing member main body made of chemically modified glass with the optical fiber is made a flat surface, a hot-melt adhesive layer is formed on the flat surface, and the covering portion of the optical fiber is fitted into at least one adhesive layer. It is characterized by having a recessed portion.
（実施例）
次に本考案を図示の実施例について詳細に説明
すると、第１図及び第２図に示す第１の実施例に
おいて、１は上側の補強部材本体、２は下側の補
強部材本体であつて、いずれも透明な結晶化ガラ
スを機械加工により平板状に加工したものであ
る。このような結晶化ガラスとしては、例えば
Li2O1.7〜６％（重量％、以下同じ）、Al2O312〜
34％、SiO255〜75％の基礎ガラス成分中に核形
成剤としてTiO2０〜３％、ZrO20.1〜５％、P2O5
０〜５％を添加し、溶融成形したうえで熱処理し
て、結晶粒径が0.1μｍ以下のベータユークリプタ
イトの結晶を析出させたものを用いることがで
き、これにより補強部材本体１，２の熱膨脹率を
光フアイバに用いられている石英ガラス（α＝４
×10-7／℃）とほぼ一致させることができる。こ
のような補強部材本体１，２の光フアイバ１０と
の接合面は平坦面とされており、この平坦面上に
ポリエチレンフイルムのようなホツトプレスによ
り容易に溶融するホツトメルト型の接着剤層３，
４が形成されている。これらの接着剤層３，４は
ポリエチレンフイルム等を所望幅に切断したうえ
で補強部材本体１，２に仮止めされたものである
が、本考案においては接着剤層３，４の表面に、
図示のように光フアイバ１０を嵌入させるための
凹部５が予め凹設されている。このような凹部５
はポリエチレンフイルムの表面をホツトプレスす
ることによつて容易に形成できるものであり、第
１図に示すような被覆部１１の幅1.6mm、厚さ0.4
mmの５心テープ型の光フアイバ１０を嵌入させる
ためには、凹部５は幅1.8mm、深さはテープ厚さ
の半分よりもわずかに浅目とすることが好まし
い。なお、光フアイバ１０の素線部１２の径は極
めて細いので、凹部５は光フアイバ１０の被覆部
１１に対してのみ設ければよい。(Embodiment) Next, the present invention will be described in detail with reference to the illustrated embodiment. In the first embodiment shown in FIGS. 1 and 2, 1 is an upper reinforcing member body, 2 is a lower reinforcing member. The main body is made of transparent crystallized glass that is machined into a flat plate shape. As such crystallized glass, for example,
Li 2 O 1.7~6% (weight%, same below), Al 2 O 3 12~
34%, SiO2 55-75% TiO2 as nucleating agent in the base glass component 0-3%, ZrO2 0.1-5 %, P2O5
Beta eucryptite crystals with a crystal grain size of 0.1 μm or less can be precipitated by adding 0 to 5%, melt-forming, and heat-treating, thereby forming the reinforcing member bodies 1 and 2. The thermal expansion coefficient of quartz glass (α = 4
×10 -7 /°C). The joint surfaces of the reinforcing member bodies 1 and 2 with the optical fiber 10 are flat surfaces, and a hot-melt adhesive layer 3, such as a polyethylene film, which is easily melted by hot pressing is applied on this flat surface.
4 is formed. These adhesive layers 3 and 4 are made by cutting a polyethylene film or the like into a desired width and temporarily fixing it to the reinforcing member bodies 1 and 2. However, in the present invention, the surfaces of the adhesive layers 3 and 4 are
As shown in the figure, a recess 5 into which the optical fiber 10 is inserted is provided in advance. Such a recess 5
can be easily formed by hot-pressing the surface of a polyethylene film, and the coating portion 11 has a width of 1.6 mm and a thickness of 0.4 mm as shown in FIG.
In order to fit the 5-fiber tape-type optical fiber 10 of 5 mm in width, it is preferable that the recess 5 has a width of 1.8 mm and a depth slightly shallower than half of the tape thickness. Note that since the diameter of the wire portion 12 of the optical fiber 10 is extremely small, the recess 5 only needs to be provided for the coating portion 11 of the optical fiber 10.
また第３図及び第４図に示す第２の実施例で
は、下側の補強部材本体２に断面凹型状の薄型に
形成され、上側の補強部材本体１はこの溝内に嵌
入されるカバーとなつている。本実施例において
も光フアイバ１０との接着面は平坦面とされてお
り、その表面に光フアイバ１０を嵌入させるため
の凹部５が凹設された接着剤層３，４が形成され
ていることは第１の実施例と同様である。なおい
ずれの実施例においても補強部材本体１，２の光
フアイバ１０との平坦な接着面を粗面として接着
剤の剥離を防止するとともに、この粗面を含む全
表面を化学強化して補強部材本体１，２の機械的
強度を高めておくことが好ましい。 In the second embodiment shown in FIGS. 3 and 4, the lower reinforcing member main body 2 is formed thin with a concave cross section, and the upper reinforcing member main body 1 has a cover fitted into this groove. It's summery. In this embodiment as well, the surface to be bonded to the optical fiber 10 is a flat surface, and the adhesive layers 3 and 4 are formed with recesses 5 into which the optical fiber 10 is inserted. is the same as in the first embodiment. In both embodiments, the flat adhesive surfaces of the reinforcing member bodies 1 and 2 with the optical fiber 10 are roughened to prevent the adhesive from peeling off, and the entire surface including the roughened surfaces is chemically strengthened to form the reinforcing member. It is preferable to increase the mechanical strength of the main bodies 1 and 2.
（作用）
このように構成されたものは、融着法により素
線部１２を接続した光フアイバ１０を下側の補強
部材本体２の接着剤層４の表面の凹部５内に嵌入
させたうえ、上側の補強部材本体１をその接着剤
層３を下向きにして重ねて接着剤層表裏面の凹部
５を光フアイバ１０の上面に一致させ、ホツトプ
レスを行つて接着剤層３，４を溶融させ光フアイ
バ１０を上下の補強部材本体１，２間に固定する
ものである。本考案においては接着剤３，４の表
面に光フアイバ１０を嵌入させるための凹部５が
予め凹設してあるので、光フアイバ１０はホツト
メルト開始の時点においてこの凹部５によつて確
実な位置決めがなされている。また、本考案にお
いては、従来に比べて素線部の空洞部が狭く構成
されているため接着剤層を薄くでき、加圧、加熱
の時の接着剤の流動量を小さく抑えられる。従つ
て、フアイバの片寄りをなくすことが可能である
うえ、気泡の混入も防止できる。よつて、光フア
イバ１０に適当な張力を加えつつホツトプレスを
行えば、その後の加熱により第２図及び第４図の
ように接着剤層３，４が溶融一体化した場合にも
光フアイバ１０の偏りや素線部１２のねじれ、気
泡の混入等の欠陥を大幅に減少させることができ
る。従つて本考案の補強部材を用いれば光フアイ
バ１０の位置合せを比較的容易にしかも正確に行
うことができ、光フアイバの偏りや素線のねじ
れ、気泡の混入等に起因する接続部のトラブルを
有効的に防止することができる。また本考案の補
強部材は光フアイバに用いられる石英ガラスと熱
膨脹率がほぼ等しい低膨脹の結晶化ガラスを用い
ているので使用中に光フアイバに熱応力が生ずる
ことがない。更にまた、実施例のように透明な結
晶化ガラスを用い、接着剤層３，４にも少なくと
も溶融後は透明となる接着剤を用いた場合には、
接着後にも光フアイバ１０を外側から点検できる
こととなる。(Function) In this structure, the optical fiber 10 with the strands 12 connected by a fusion method is fitted into the recess 5 on the surface of the adhesive layer 4 of the lower reinforcing member main body 2. , stack the upper reinforcing member body 1 with its adhesive layer 3 facing downward, align the recess 5 on the front and back surfaces of the adhesive layer with the upper surface of the optical fiber 10, and perform hot pressing to melt the adhesive layers 3 and 4. The optical fiber 10 is fixed between the upper and lower reinforcing member bodies 1 and 2. In the present invention, since the recess 5 for inserting the optical fiber 10 into the surface of the adhesives 3 and 4 is provided in advance, the optical fiber 10 can be reliably positioned by the recess 5 at the start of hot melting. being done. Furthermore, in the present invention, since the cavity of the strand is narrower than in the past, the adhesive layer can be made thinner, and the flow rate of the adhesive during pressurization and heating can be kept small. Therefore, it is possible to eliminate the deviation of the fibers, and it is also possible to prevent the inclusion of air bubbles. Therefore, if hot pressing is performed while applying an appropriate tension to the optical fiber 10, even if the adhesive layers 3 and 4 are melted and integrated by subsequent heating as shown in FIGS. 2 and 4, the optical fiber 10 will remain intact. Defects such as deviation, twisting of the wire portion 12, and inclusion of air bubbles can be significantly reduced. Therefore, by using the reinforcing member of the present invention, the alignment of the optical fiber 10 can be performed relatively easily and accurately, and problems at the connection part caused by deviation of the optical fiber, twisting of the strands, inclusion of air bubbles, etc. can be avoided. can be effectively prevented. Furthermore, since the reinforcing member of the present invention uses a low-expansion crystallized glass whose coefficient of thermal expansion is approximately equal to that of the quartz glass used for optical fibers, no thermal stress is generated in the optical fibers during use. Furthermore, when transparent crystallized glass is used as in the example and an adhesive that becomes transparent at least after melting is used for the adhesive layers 3 and 4,
Even after bonding, the optical fiber 10 can be inspected from the outside.
（考案の効果）
本考案は以上の説明からも明らかなように、ホ
ツトメルト型の接着剤層の表面に光フアイバを嵌
入させるための凹部を設けておくことによりホツ
トプレス時における光フアイバの偏りやねじれ、
気泡の混入等を防止することに成功したものであ
り、接合作業が簡単に行えること、光フアイバの
ねじれ等に起因するトラブルを減少させて接合部
分の信頼性を向上できること等の利点を持つうえ
に、容易に製作できる利点をも有する。(Effects of the invention) As is clear from the above explanation, the present invention prevents the optical fiber from becoming biased or twisted during hot pressing by providing a recess in the surface of the hot-melt adhesive layer for inserting the optical fiber. ,
It has succeeded in preventing the inclusion of air bubbles, etc., and has the advantages of being able to easily perform the joining work, reducing troubles caused by twisting of the optical fiber, and improving the reliability of the joined part. It also has the advantage of being easy to manufacture.
また本考案によれば補強部材本体の光フアイバ
との接合面を平坦面としてあるので、加工が困難
な結晶化ガラスの表面に細かい加工を施す必要が
なく、安価に製作できる利点がある。 Further, according to the present invention, since the joint surface of the reinforcing member main body with the optical fiber is a flat surface, there is no need to perform detailed processing on the surface of crystallized glass, which is difficult to process, and there is an advantage that manufacturing can be done at low cost.
よつて本考案は従来のこの種光フアイバ接続用
補強部材の問題点を解消したものとして、その実
用的価値は極めて大きいものである。 Therefore, the present invention has extremely great practical value as it solves the problems of conventional reinforcing members for optical fiber connections of this type.
第１図は本考案の第１の実施例を示す一部切欠
斜視図、第２図はその接合状態を示す断面図、第
３図は本考案の第２の実施例を示す一部切欠斜視
図、第４図はその接合状態を示す断面図である。
１，２……補強部材本体、３，４……接着剤
層、５……凹部、１０……光フアイバ、１１……
被覆部。
Fig. 1 is a partially cutaway perspective view showing the first embodiment of the present invention, Fig. 2 is a sectional view showing the joined state, and Fig. 3 is a partially cutaway perspective view showing the second embodiment of the present invention. 4 are cross-sectional views showing the bonded state. DESCRIPTION OF SYMBOLS 1, 2... Reinforcement member main body, 3, 4... Adhesive layer, 5... Recessed part, 10... Optical fiber, 11...
Covering part.
Claims (1)
部１２を被覆部１１とともに接着剤を介して固定
するための補強部材であつて、低膨脹の結晶化ガ
ラスからなる補強部材本体１，２の光フアイバ１
０との接合面を平坦面とし、その平坦面上にホツ
トメルト型の接着剤層３，４を形成し、少なくと
も一方の接着剤層に光フアイバ１０の被覆部１１
を嵌入させるための凹部５を凹設したことを特徴
とする光フアイバ接続用補強部材。 This is a reinforcing member for fixing the wire portion 12 of the optical fiber 10 connected by the fusion method together with the covering portion 11 via an adhesive, and the reinforcing member main bodies 1 and 2 are made of low-expansion crystallized glass. optical fiber 1
0 is a flat surface, hot-melt adhesive layers 3 and 4 are formed on the flat surface, and at least one adhesive layer is coated with the coating portion 11 of the optical fiber 10.
1. A reinforcing member for optical fiber connection, characterized in that a recess 5 is provided for fitting the fiber into the reinforcing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986120268U JPH0423210Y2 (en) | 1986-08-05 | 1986-08-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986120268U JPH0423210Y2 (en) | 1986-08-05 | 1986-08-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6326808U JPS6326808U (en) | 1988-02-22 |
| JPH0423210Y2 true JPH0423210Y2 (en) | 1992-05-29 |
Family
ID=31008427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986120268U Expired JPH0423210Y2 (en) | 1986-08-05 | 1986-08-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0423210Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56144409A (en) * | 1980-04-11 | 1981-11-10 | Hitachi Cable Ltd | Optical fiber connection part |
| JPS57190915A (en) * | 1981-05-19 | 1982-11-24 | Nippon Telegr & Teleph Corp <Ntt> | Reinforcing method of melt-stuck and connected part of optical fiber core wire |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58105505U (en) * | 1982-01-08 | 1983-07-18 | 日本電信電話株式会社 | Optical fiber connection structure |
-
1986
- 1986-08-05 JP JP1986120268U patent/JPH0423210Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56144409A (en) * | 1980-04-11 | 1981-11-10 | Hitachi Cable Ltd | Optical fiber connection part |
| JPS57190915A (en) * | 1981-05-19 | 1982-11-24 | Nippon Telegr & Teleph Corp <Ntt> | Reinforcing method of melt-stuck and connected part of optical fiber core wire |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6326808U (en) | 1988-02-22 |
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